System updates

✨ New Features
📣 Meta Ads Conversions API Integration in Workflow Builder
Send conversion events to Meta (Facebook) Ads directly from the Workflow Builder. Connect your Meta Ads account via a new external service, then add the "Send Meta Ads Conversion" action to any workflow transition. Configure Pixel ID, event name, action source, and optional monetary value. Customer data is automatically hashed per Meta requirements, enabling accurate server-side attribution.
🚀 Improvements
🎟️ Promo Code Price Display
The admin panel now immediately reflects the discounted price after a promo code is applied, and reverts to the original price when the promo code expires or is removed.
🐛 Bug Fixes
🎯 UTM Double Welcome Points
Fixed a bug where customers installing a card via a UTM link with a custom welcome bonus received double the configured points.
💬 Conversation Messages & RFM Batch Recalculation
Fixed issues with conversation message display and improved RFM segment recalculation to run in batches for better performance and reliability.